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EVALUATION OF EFFECTIVE PRESTRESS FORCE IN 28-YEAR-OLD PRESTRESSED CONCRETE BRIDGE BEAMS

Say-Gunn Low, M K Tadros, Amin Einea, Rafael A. Magaña

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Abstract

This paper presents the results of an experimental study to determine the effective prestress force in two full-scale prestressed concrete bridge beams that were removed from a bridge structure after a period of 28 years in service. An average prestress loss of 16% was determined for the two specimens. This loss value is approximately 60% of the loss predicted according to design specifications.

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What this paper is about

This paper presents the results of an experimental study to determine the effective prestress force in two full-scale prestressed concrete bridge beams that were removed from a bridge structure after a period of 28 years in service. An average prestress loss of 16% was determined for the two specimens. This loss value is approximately 60% of the loss predicted according to design specifications.

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Available abstract

This paper presents the results of an experimental study to determine the effective prestress force in two full-scale prestressed concrete bridge beams that were removed from a bridge structure after a period of 28 years in service. An average prestress loss of 16% was determined for the two specimens. This loss value is approximately 60% of the loss predicted according to design specifications.

Key concepts: Prestressed concrete, Structural engineering, Bridge (graph theory), Full scale, Materials science, Precast concrete, Engineering, Forensic engineering

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EVALUATION OF EFFECTIVE PRESTRESS FORCE IN 28-YEAR-OLD PRESTRESSED CONCRETE BRIDGE BEAMS — Research Paper | ScholarLens